CN110985163A - Oil-gas separation device suitable for engine - Google Patents
Oil-gas separation device suitable for engine Download PDFInfo
- Publication number
- CN110985163A CN110985163A CN201911414421.8A CN201911414421A CN110985163A CN 110985163 A CN110985163 A CN 110985163A CN 201911414421 A CN201911414421 A CN 201911414421A CN 110985163 A CN110985163 A CN 110985163A
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- Prior art keywords
- oil
- hole
- unit
- gas separation
- separation device
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- 238000000926 separation method Methods 0.000 title claims abstract description 43
- 239000011148 porous material Substances 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 230000004888 barrier function Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000010137 moulding (plastic) Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 51
- 239000000203 mixture Substances 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000003595 mist Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
- F01M2013/0422—Separating oil and gas with a centrifuge device
- F01M2013/0427—Separating oil and gas with a centrifuge device the centrifuge device having no rotating part, e.g. cyclone
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
The invention provides an oil-gas separation device suitable for an engine, which comprises: an orifice plate unit 300, a baffle unit 400; the pore plate unit 300 and the baffle plate unit 400 are assembled into an oil-gas separation device suitable for an engine; the orifice plate unit 300 includes: the pore plate comprises a pore plate body, a columnar structure 310 and a columnar structure inner through hole 320; the columnar structure 310 is arranged on the orifice plate body; the through hole 320 in the columnar structure is arranged inside the columnar structure 310; the baffle unit 400 is disposed at the rear side of the orifice plate unit 300; the barrier unit 400 includes: a vertical baffle 410; the central line of the through hole 320 in the columnar structure is perpendicular to or intersects with the vertical baffle 410. The component is easy to realize through the existing plastic molding process and has low production cost.
Description
Technical Field
The invention relates to the field of oil-gas separation systems, in particular to an oil-gas separation device suitable for an engine.
Background
During engine operation, part of the combustion exhaust gas in the cylinder leaks into the crankcase through the clearance between the piston and the cylinder wall. This exhaust gas often needs to be introduced into the engine intake in order to prevent contamination of the oil and excessive crankcase internal pressure. However, since the combustion exhaust gas starts to mix the oil mist with the oil mist in the crankcase to form the oil-air mixture, it is necessary to separate as much oil as possible from the oil-air mixture before the oil-air mixture reaches the intake pipe in consideration of the influence on the engine emission and the oil consumption rate. Many engines accomplish this task by integrating corresponding functions in the cylinder head cover. For a cylinder head cover made of plastic, the existing oil-gas separation function has more integration options, such as labyrinth type, impact type, cyclone type, filter screen type and the like, due to the characteristic of process flexibility. For the cylinder head cover made of aluminum, due to the limitation of technological means, the current conventional means is to cast vertical staggered ribs inside the (die-cast) aluminum cover, and then cover the lower part of the aluminum cover with a stamped steel plate to form a sealed space in which gas flows in a unidirectional manner to increase the length and turn of an airflow path, so that the oil-gas separation effect is achieved by utilizing the inertia effect of oil drops carried in the gas, and the structure is generally called as a labyrinth oil-gas separation structure in the industry.
However, as engine emission regulations have become more stringent and performance has increased with concomitant miniaturization of the displacement, the labyrinth separation structure has not been able to meet new requirements by improvement, particularly with respect to aluminum shrouds.
Patent document CN209519471U discloses an oil-gas separation tower, including oil-gas separation tower main part and fixed bolster, oil-gas separation tower main part bottom is fixed with the fixed bolster, oil-gas separation tower main part upper end is provided with the oil gas export, the oil-gas separation tower main part position department left and right sides at oil gas export place is the symmetry respectively and is provided with thermometer and manometer, the oil-gas separation tower main part lower extreme left and right sides is the symmetry respectively and is provided with oil gas import and connects the speed reducer flange, the oil-gas separation tower main part internal position department that corresponds between oil gas import and the connection speed reducer flange transversely is provided with the main shaft, install the impeller on the main shaft, oil-gas separation. This patent is not well suited for use in engines.
Disclosure of Invention
In view of the defects in the prior art, the invention aims to provide an oil-gas separation device suitable for an engine.
According to the invention, the oil-gas separation device suitable for the engine comprises: an orifice plate unit 300, a baffle unit 400; the pore plate unit 300 and the baffle plate unit 400 are assembled into an oil-gas separation device suitable for an engine; the orifice plate unit 300 includes: the pore plate comprises a pore plate body, a columnar structure 310 and a columnar structure inner through hole 320; the columnar structure 310 is arranged on the orifice plate body; the through hole 320 in the columnar structure is arranged inside the columnar structure 310; the baffle unit 400 is disposed at the rear side of the orifice plate unit 300; the barrier unit 400 includes: a vertical baffle 410; the central line of the through hole 320 in the columnar structure is perpendicular to or intersects with the vertical baffle 410.
Preferably, the columnar structure inner through hole 320 is internally provided with a columnar structure inner through hole rifling 321.
Preferably, the cylindrical structure inner through-hole rifling 321 is a spiral cylindrical structure inner through-hole rifling.
Preferably, the through hole 320 in the columnar structure is a through hole with a reduced internal shape.
Preferably, the baffle unit 400 further includes: the vertical baffle is convex; the vertical baffle projection is provided on the surface of the vertical baffle 410.
Preferably, the vertical baffle projection is a particle-type projection.
Preferably, the baffle unit 400 further includes: an oil passing hole 420; the oil passing hole 420 penetrates the vertical baffle 410.
Preferably, the baffle unit 400 further includes: an oil return unit; the oil return unit is disposed at the lower end of the baffle unit 400.
Preferably, the oil return unit includes: oil return hole member 430, oil return hole post 440; the oil return hole member 430 is connected to one end of an oil return hole pillar 440.
Preferably, the oil return unit further includes: an umbrella valve 450; the umbrella valve 450 is connected with the other end of the oil return hole column 440; the umbrella valve 450 is disposed at the end of the oil return hole column 440.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention has reasonable design and convenient use, and can overcome the defects in the prior art;
2. the invention has compact structure, and can realize better separation effect than the prior labyrinth structure in the same space;
3. the invention can be modularized, and a given separation efficiency target can be realized by sequentially arranging a plurality of units in the cylinder head cover;
4. the product of the invention is easy to realize standardization and serialization, and different engines can correspondingly adjust the number of the through holes 320 according to the flow rate of the oil-gas mixture to meet the requirements;
5. the component is easy to realize by the existing plastic molding process and has low production cost.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic front view of the present invention.
FIG. 3 is a side cross-sectional schematic view of the present invention.
In the figure:
The columnar structure 310 oil passing hole 420
Oil return hole member 430 of through hole 320 in columnar structure
Oil return hole column 440 of through hole rifling 321 in columnar structure
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
As shown in fig. 1, 2 and 3, the oil-gas separation device for an engine provided by the invention comprises: an orifice plate unit 300, a baffle unit 400; the pore plate unit 300 and the baffle plate unit 400 are assembled into an oil-gas separation device suitable for an engine; the orifice plate unit 300 includes: the pore plate comprises a pore plate body, a columnar structure 310 and a columnar structure inner through hole 320; the columnar structure 310 is arranged on the orifice plate body; the through hole 320 in the columnar structure is arranged inside the columnar structure 310; the baffle unit 400 is disposed at the rear side of the orifice plate unit 300; the barrier unit 400 includes: a vertical baffle 410; the central line of the through hole 320 in the columnar structure is perpendicular to or intersects with the vertical baffle 410. During the operation of the engine, the exhaust gas containing oil mist will pass through the several through holes 320 and hit the vertical plate 410 of the baffle 400 with a small distance at high speed, and most of the oil drop particles in the oil mist will be adsorbed and separated by the vertical plate 410 due to the inertia force and the force between the liquid and solid molecules.
Preferably, the columnar structure inner through hole 320 is internally provided with a columnar structure inner through hole rifling 321.
Preferably, the rifling 321 in the columnar structure is spiral rifling in the columnar structure, so that when gas flows through the rifling at a medium high speed, a rotating centrifugal force is generated to enable oil drop particles with larger diameters to be close to the inner wall of the through hole 310, and separation is completed.
Preferably, the through holes 320 in the columnar structure are internally necking-shaped through holes, that is, the diameter of the cross section is gradually reduced in the flow direction, which promotes the aggregation of smaller oil drop particles in the oil gas into larger particles, thereby facilitating the separation.
Preferably, the baffle unit 400 further includes: the vertical baffle is convex; the vertical baffle projection is provided on the surface of the vertical baffle 410.
Preferably, the vertical baffle projections are particle-type projections so that the rotational velocity component of the gas generated in the through-holes 320 with the through-hole rifling in the helical columnar structure also helps to increase the probability of oil droplet particles colliding with and thereby separating from them.
Preferably, the baffle unit 400 further includes: an oil passing hole 420; the oil passing hole 420 penetrates the vertical baffle 410. The oil passing hole 420 can prevent oil deposited for a long time without an additional oil return hole downstream of the flapper unit 400 from being collected at the other side thereof to block the gas outlet passage.
Preferably, the baffle unit 400 further includes: an oil return unit; the oil return unit is disposed at the lower end of the baffle unit 400, so that the separated oil flows back to the engine oil pan.
Preferably, the oil return unit includes: oil return hole member 430, oil return hole post 440; the oil return hole member 430 is connected to one end of the oil return hole pillar 440, so that the oil-gas mixture can be prevented from entering therethrough to partially bypass the oil-gas separation device by extending the oil return hole pillar 440 into an oil sump correspondingly provided in the cylinder head.
Preferably, the oil return unit further includes: an umbrella valve 450; the umbrella valve 450 is connected with the other end of the oil return hole column 440; the umbrella valve 450 is disposed at the end of the oil return hole column 440. The umbrella valve 450 only allows oil to flow out from top to bottom and does not allow crankcase gas to flow from bottom to top into the oil-gas separation module, thereby making the application of the device more convenient due to less restrictions on the structure of the cylinder head.
Specifically, in one embodiment, the oil-gas separation device for the engine is formed by connecting two plastic parts, and the connection mode of the pore plate 300 and the baffle 400 adopts a clamping structure commonly used by the plastic parts, so that the pore plate and the baffle are conveniently installed in the aluminum cover as a whole.
The invention has reasonable design and convenient use, and can overcome the defects in the prior art; the invention has compact structure, and can realize better separation effect than the prior labyrinth structure in the same space; the invention can be modularized, and a given separation efficiency target can be realized by sequentially arranging a plurality of units in the cylinder head cover; the product of the invention is easy to realize standardization and serialization, and different engines can correspondingly adjust the number of the through holes 320 according to the flow rate of the oil-gas mixture to meet the requirements; the component is easy to realize by the existing plastic molding process and has low production cost.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (10)
1. An oil-gas separation device suitable for an engine, comprising: an orifice plate unit (300) and a baffle plate unit (400);
the pore plate unit (300) and the baffle plate unit (400) are assembled into an oil-gas separation device suitable for an engine;
the orifice plate unit (300) includes: the pore plate comprises a pore plate body, a columnar structure (310) and a through hole (320) in the columnar structure;
the columnar structure (310) is arranged on the pore plate body;
the through hole (320) in the columnar structure is arranged in the columnar structure (310);
the baffle plate unit (400) is arranged at the rear side of the orifice plate unit (300);
the shutter unit (400) includes: a vertical baffle (410);
the central line of the through hole (320) in the columnar structure is perpendicular to or intersected with the vertical baffle (410).
2. Oil-gas separation device suitable for engines, according to claim 1, characterized by the fact that the cylinder structure inner through holes (320) are internally provided with cylinder structure inner through hole rifling (321).
3. Oil-gas separation device suitable for use in engines, according to claim 2, characterized in that the cylinder-structured inner through-hole rifling (321) is a helical cylinder-structured inner through-hole rifling.
4. The oil-gas separation device applicable to the engine as claimed in claim 1, wherein the through hole (320) in the columnar structure is a through hole with a reduced internal shape.
5. The oil-gas separation device suitable for an engine according to claim 1, wherein the baffle unit (400) further comprises: the vertical baffle is convex;
the vertical baffle projection is disposed on a surface of the vertical baffle (410).
6. The oil-gas separation device suitable for use in an engine of claim 5, wherein the vertical baffle projection is a pellet-type projection.
7. The oil-gas separation device suitable for an engine according to claim 1, wherein the baffle unit (400) further comprises: an oil passing hole (420);
the oil passing hole (420) penetrates through the vertical baffle plate (410).
8. The oil-gas separation device suitable for an engine according to claim 1, wherein the baffle unit (400) further comprises: an oil return unit;
the oil return unit is arranged at the lower end of the baffle plate unit (400).
9. The oil-gas separation device suitable for an engine of claim 8, wherein the oil return unit comprises: an oil return hole member (430), an oil return hole column (440);
the oil return hole member (430) is connected with one end of an oil return hole column (440).
10. The oil-gas separation device suitable for an engine of claim 9, wherein the oil return unit further comprises: an umbrella valve (450);
the umbrella valve (450) is connected with the other end of the oil return hole column (440);
the umbrella valve (450) is arranged at the tail end of the oil return hole column (440).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911414421.8A CN110985163A (en) | 2019-12-31 | 2019-12-31 | Oil-gas separation device suitable for engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911414421.8A CN110985163A (en) | 2019-12-31 | 2019-12-31 | Oil-gas separation device suitable for engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110985163A true CN110985163A (en) | 2020-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911414421.8A Pending CN110985163A (en) | 2019-12-31 | 2019-12-31 | Oil-gas separation device suitable for engine |
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| Country | Link |
|---|---|
| CN (1) | CN110985163A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1607320A (en) * | 2003-10-15 | 2005-04-20 | 马勒-特耐株式会社 | Oil separator combined with cylinder head cover |
| CN101545390A (en) * | 2009-03-26 | 2009-09-30 | 重庆长安汽车股份有限公司 | Gas and oil separating plant |
| CN203742707U (en) * | 2014-01-27 | 2014-07-30 | 长城汽车股份有限公司 | Oil-gas separation structure for automobile engine crank case |
| CN106481383A (en) * | 2016-12-15 | 2017-03-08 | 广州贝塔汽车科技有限公司 | A kind of machine oil structure in escape engine crankcase waste gas |
| DE102016223984A1 (en) * | 2016-12-01 | 2018-06-07 | Mahle International Gmbh | Oil separator for separating oil from blow-by gas |
| CN211258757U (en) * | 2019-12-31 | 2020-08-14 | 里卡多科技咨询(上海)有限公司 | Oil-gas separation device suitable for engine |
-
2019
- 2019-12-31 CN CN201911414421.8A patent/CN110985163A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1607320A (en) * | 2003-10-15 | 2005-04-20 | 马勒-特耐株式会社 | Oil separator combined with cylinder head cover |
| CN101545390A (en) * | 2009-03-26 | 2009-09-30 | 重庆长安汽车股份有限公司 | Gas and oil separating plant |
| CN203742707U (en) * | 2014-01-27 | 2014-07-30 | 长城汽车股份有限公司 | Oil-gas separation structure for automobile engine crank case |
| DE102016223984A1 (en) * | 2016-12-01 | 2018-06-07 | Mahle International Gmbh | Oil separator for separating oil from blow-by gas |
| CN106481383A (en) * | 2016-12-15 | 2017-03-08 | 广州贝塔汽车科技有限公司 | A kind of machine oil structure in escape engine crankcase waste gas |
| CN211258757U (en) * | 2019-12-31 | 2020-08-14 | 里卡多科技咨询(上海)有限公司 | Oil-gas separation device suitable for engine |
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